Turbine inlet piping



Oct- 12, 1943 H. A. ALTORFER ETAL 2,331`,644

TURBINE INLET, PIPING Filed Sept. 10, 1942 2 Sheets-Sheet 1 oct. 12, 1943.

H. A. ALTORFER El' AL TURBINE INLET PIPING Filed Sept. 10, 1942 JWM/omg 2 Sheets-Sheet 2 8 rendering the outer wall, the disk E and the inner lining section 3 radially removable relative to each other. and'pre'formed blocks 9 of permeable insulation substantially filling the space between a pair of said sections, the opposed portion of the outer Wall and the inter-connecting disks Ii.V 1

Referring to Figs. 3 and 4, it is seen that the outer connections I comprise a series of circumferentially spaced bifurcated tabs II which are secured to the outer peripheral portion of the disk 6 and extend radially outward therefrom, a ring I 2i which is removably securedin an annular recess formed in the periphery of the flanged portion 2 of the outer section'l in any suitable manner such as by the screws I3, and a series of circumferentially spaced radially extending T-shaped tabs I4 which are secured to the; ring .I 2 jwith their stem portions disposed betweenthe bifurcated ends of the tabs I I as shown in Fig. 4. Thevinner connections-8 comprise an outward, radially extending flange I6 formed on orsecured to the adjacent end of the inner lining section 3' and having an outer portion I1 of reduced thickness 4which'isprovided with a series of circumferentially spaced,'radially extending slots I8 and a series of'circumferentially spaced T-shaped tabs I9 whichfare secured to the inner peripheral portion of the disk 6 `with their stem portions disposed within the opposed slot I8 in the flange I6 as shown in Fig. 5.

The depthof the recesses in which the rings I2 are disposed is somewhat greater than the thicknessv of the rings' I2, and since the thickness of the disks 6 is substantially equal to that of the rings I2, the resulting structure affords an axial clearance'or. spacei2| between the adjacent pairs of lining sections 3 and between the adjacent flangeszl B, disks 6 and rings I2 as is clearly shown in Fig. 3. In addition,"the outer periphery of each disk 6 is radiallyspaced from the inner periphery of the opposed ring I2, thereby providing a passage 22 placing the space 2I incommunication with that containing the insulation 9. In this connection, it should nowbe obvious that variations in the pressure of the gas iilowing through the` lining .sections 3. resultv insimilar variations inthe pressure within the space fllled with. insulation 9 due to the breathing actionafforded by theispace 2I` and the passage 22. In additiomitshould also be obvious that theouter and inner connectors 1 and 8 render the disks E, theouter wall and the inner liningfsections 3 radially movable relative to each other.

. The ring 4 is preferably spaced from the axially spacedend portions of a pair of sections 3 and this construction is accomplished, reference being had to Fig. Gand Fig. 7, by interposingspacy ing sections 23 between the ends of the sections 3 and the ring 4 (see Fig. 6) and by intermittently welding one edge of the ring 4 to the adjacent end portion of a section 3 as indicated at 24. After the welding has been completed, the spacing sections 23 are removed which leaves the ring 4 spaced from the axially spaced ends of the sections 3, therebyproviding additional breathing openings placing the interior of the sections 3 in communication with the space containing the insulation 9. i .i l

The structure shown in Fig. 1 may be readily assembled by iirst providing an inner section 3 with the flange I6, then clamping the disk 6 to the flange I6 and welding the T-shaped tabs I9 in place on the disk 6 with their stem portions disposed in the slots I8, then clamping the ring I2, to which are already secured the ,T-shaped tabs I4, to the disk 6 and completing this portion of the assembly by placing the tabs II on the disk 6 with the bifurcations receiving the stem portions of the T-shaped. tabs I4 on the ring I2 and welding the tabs II to the surface of the disk 6 as shown. If the ring 4 has not already been secured to the section 3 as described in connection with Figs. Sand 7, it then is attached at this time. The insulation is next placed around the section 3, preferably three layers of preformed blocks are used, as shown, (the insulation being held in position by a suitable strip or band of metal not shown) and the outer section I can then be slid coaxially over the insulation and secured to the ring I2 by means of the screws I3. In applying the invention to a section of curved piping, the outer sections I are preferably made in two annular parts and after each of said parts has been secured to an assembly comprising an inner lining section 3, a disk 6 and a ring I2 as just described, the assemblies are then brought together, in angularly displaced relation with the adjacent unilanged ends of the annular outer parts abutting as shown in Fig. l, whereupon said abutting ends are welded together to provide a unitary section I which may be bolted or otherwise removably secured to similar sections to provide a pipe of` desired length. The ends of the preformed blocks of insulation which abut the flange I 6, disk 6 and ring I2 are provided with recesses adapted to receive therein the tabs II, I4 and IS which act to prevent the insulating blocks from turning relative to each other and relative to the inner and outer Wall sections.

The modified construction shown in Figs. 8-12 inclusive diiers from that shown in Figs. 1-7 inclusive in that instead of a single disk 6, a plurality of annular disks, three in this case designated 26, 21 and 28, are united in radially spaced concentric relation with respect to each other and with respect to the lining section 3 by means of a radially extending bifurcated connector 29 having its inner bifurcated ends welded or otherwise securely united with the outer surface portion at the endof a lining section 3; in that the outer edge of the disk 28 is provided with a series of circumferentially spaced. radially extending notches 3l, in that the disk 28 is provided'with a series of circumferentially spaced radially extending tabs 32 which overlle and are narrower than said notches and which have their inner ends slotted to receive therein the outerend of the connector 29 and have bifurcated outer ends adapted to receive therein a T-shaped tab carried by the outer wall section I, and in that Vthe flanged portion 2 of the outer wall section is provided with an annular recess in which are removably secured, as by means of screws 33, a series of circumferentially spaced inwardly extending radial tabs 34 terminating in T-shaped heads36 disposed between the bifurcations of the opposed tabs 32 onlthe disk 28 as is best Yshown in Figs. l0, 11 and 12. lhe connectors 29 may be provided with laterally extending stiffening flanges or members 31 secured to the underlying disk 23 or 21 as shown.` Y

In all other'respects, the aforementioned modi-` and from the inner and outer'wall sections V(the onlylinterconnections being the connectors y'29' and tabs 32 and as) ,ies'sneat will be transmitted I to the outer wall section andtnatl the breathing action is` greatly improved by the additional openf ings between thedisks and between tlle inner disk and the liner section providing' communication between the` space 2i and thespacecontaining the insulation 9.- -v 1 A The invention isof general application with respect to high tern erature fluid conningstru turs'gand although the j constructions herein illustrated and described arec particularly applicable' to combustion gas turbine inlet piping, it shouldbe understood that it; is not'intended to limit the invention to the exactdetails' f` co'r 1' structioneherein' shown and described as various modieations "within the scope of the appended claimsmay occur to persons skilledin thenrt.

It is claimed and" desired tosecur'eby Letters Patent: Y

1. A Aconning structure 'for a high tempera'- ture gaseous fluid comprising an annular outer wall, a fluid confining lining disposed-within 'and spaced from said outer wall, and interconnecting means including annulardisks interposed Ybe-y tween said lining and outer walrandrendering said disks movable radially `'relativeto said outer Wall and rendering said disks and liningradially movable relative to each other. Y l j- 2.1 A connning structure for-a nigh temperature gaseous uid comprisingan annular Vouter wall, a fluid vconlining lining disposedr within and spaced from said' outer wall, and interconl'- necting means including longitudinally ilexible annularv ,disks interposed between said lining and outer wall and rendering said disks movable .eradially relative to said outer wall and rendering said diSkS and lining radiallymovable relative to each other.

3. A confining structure for a high temperature gaseous fluid comprising an annular outer wall, an inner fluid conning lining, and means ends-' arranged? for'` r lative longitudinal :novel ment andto provide an opening for the passage offluid'into the space between said lining'an'd shelLLannular disks surrounding the remote ends of the-sections of said'pair 'and `being'moeratively interconnected .with

saidlfremote ends and with opposed portions of said shell to `support the remote endsof the ysectionsofl said pair within said shell :or radial movement relative thereto, and permeable insulation substantially filling said space. f

6. A coniining structure `for a hightempera ture gaseousfluid comprising an annular Ywall, a fiiuid confining lining `disposed within and spaced yfrom said' wall; said fliningincluding'a pairl of axially spaced annular sections: andra surrounding.' ring 'covering the gap between the' Vadjacent*ends'oi the sections of said pain'said including longitudinally spaced `annular disks o and radially alined bifurcated elements interconnecting said disks with said lining and outer wall and rendering said disks movable radially relative to said outer wall and rendering said lining and disk movable radially relative to each other..

4. Aaconining structure for a high temperature gaseous fluid comprising anannular wall, a fluid confining lining disposed within and spaced from said wall, said lining including a pair of annular sections having their adjacent ends arranged for relative longitudinal movement, and annular disks surrounding the remote ends of the sections of said pair and being operatively interconnected with said remote ends and with opposed portions of said wall to support the remote ends of the sections of saidpair within said wall for radial movement relative thereto.

5. A conning structure for a high temperature gaseous fluid comprising an annular shell, a iluid conning lining disposed within and spaced from said shell, said lining including a pair of annular sections having their adjacent ringbeing secured to oneof said adjacent ends, and annular` disks surrounding the remote ends ofthese'ctions of said: pair and beingoperatively interconnected with said remote ends and with opposed portions) or` said wall to support the remotey ends of the sections'of said vpair Within saidfwall for radial movement relative thereto. 1 7?.- A confining-structure for a high temperature gaseous'fluidcomprising anannular wall, a iluid` confining lining disposed within and spaced from said wall, said lining including ajpair of axially spaced annular sections and a surrounding ring nonsealingly vcovering the gap'between the adjacent ends of the sections of said pair, saidiring being secured to one of said adjacentends, anf nular disks surroundingftheremote ends ofiftlie sections of said pair and being operatively.intera` connected with said-remote' ends and with opposediiportions of said wall to support theN remote endsof the sections of for radial movement relativelthereto,"andpermeable" insulation substantially filling thespace betweenfsaid'lining and shell.

8. "A confining structure for a high temperature gaseous/fluid comprisingvan annulanwall; a

liuid conning lining disposed within and 'spaced from said wall, said lining including axially spaced, pairs of annular sections with the adjacent ends of the sectionsy oi eaclfrpair arrangedY for :relativelongitudinal movement, `and annular diskspsurrounding the'remote ends ofthe sections of said pairs and being operatively interco nected with said remote ends and with opposed portions of said shell to support the remote ends of the sections of said pairs within said shell for radial movement relative thereto.

.. 9. A coniining structure for a high temperature gaseous fluid comprising an annular wall, a fluid confining lining disposed within and spaced from said wall, said, lining including axially spaced pairs of annular sections with the adjacent ends of the sections of each pair arranged for relative longitudinal movement, annular disks surrounding the remote ends of the sections of i said pairs and beingl operatively interconnected With said remote ends and with opposed portions of said wall to support the remote ends of thesecy tions of said pairs within said wall for radial movementI relative thereto, said interconnection providing openings ythrough which fluidr entering said pair within saidwall from said wall, said lining including axially spaced pairs of annular axially spaced sections and Va surrounding ring .covering the gap between the adjacent ends of the sections offeach pair, said ring being secured 'to one of said adjacent ends, and annular disks surrounding the remote ends of the sections of said pairs and being operatively interconnected with said remote'ends and with opposed portions of said Wallrto support the remote ends of the sections of said pairs within said wall for radial, movement relative thereto. A

l1. A confining structure for a high temperature gaseous fluid comprising an annular wall, a uid confining lining disposed within and spaced from said wall, said lining including axially spaced pairs of annular axially spaced sections and a surrounding ring nonsealingly covering the gap between the adjacent ends of the sections of each pair, said ring being secured tol one of said adjacent ends, annular disks surrounding the remote ends of the sections of said pairs and being operatively interconnected with saidremote ends and vwith opposed portions'of said wall to support the remote ends of the sections of said pairs within said wall for radial movement relative thereto, said interconnections providingopenings through which iluid entering the gap between i said axially spaced'pairs of sections mayrpass into the space between said lining and wall, and permeable insulation substantially liilling said space. v 12. A conning structure for a high temperature gaseous iluid comprising an annular wall,

a fluid conning lining disposed within and spaced from said wall, said lining including a pair of armular sections having their adiacentends arranged for relative longitudinal movement, annular disks surrounding the remote ends of the sections of said pair and beingoperatively interconnected wlth saidremote ends and with opposed portions of said wall to support the remote ends of the sections of said pair Within said wall for radial movement relative thereto, said interconnection providinginsulation retaining members projecting into the space between said lining and shell, and preformed blocks of insulation substantially `illing said space and being provided with recesses receiving said retaining members therein.' v

13. In a conning structure for a high tein-` perature gaseous iluid, an annular outer wall, an annular inner wall, and means mounting said inner wall in ooaxially spaced relation Within said outer wall comprising annular disks adapted to surround said inner Wallin radially spaced concentric relation, a plurality of circumferentially spaced and radially extending bracket members uniting said inner wall and disks in radially spaced concentric relation with respect to one another, and connectors coaxially mounting said united inner wall and disks within said outer wall for radial movement relative thereto.

14. In a conning structure for a high temperature gaseous iuid, an annular outer wall, annular disks adapted for disposition between said inner and outer walls in radially spaced coaxial relation with respect to each other and with respect to said walls, and means connecting said Walls and disks in said radially spaced coaxial relation and rendering said inner Wall and disks radially movable relative to said outer wall.

15. In a conning structure for a high tem perature gaseous iiuid, an annular outer wall, an inner wall embodying adjacent pairs of annular sections disposed in end to end relation, a series of annular disks mounted in radially spaced coaxial relation between the remote ends'of each pair of said sections and opposed portions of said outer wall and forming therewith juxtapositioned compartments having breathing openings in a wall thereof, and permeable insulation substantially filling said compartments.

16. In a confining structure for a high tem-.- perature gaseous fluid, an annular outer wall, an inner wall embodying adjacent pairs of longitudinally spaced annular sections disposed in end to end relation, a surrounding ring nonsealingly covering the gap between the adjacent ends of the sections of each pair, a series of annular disks mounted in radially spaced coaxial relation between the remote ends of veach pair of said sec tions and opposed portions of said outer wall and forming therewith juxtapositioned compartments, and permeable insulation substantially filling said compartments. I

HANS A. ALTORFER. HENRY THOMAS LOBERG. 

